<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4">
<head>
    <title>Hello World!</title>
</head>
<body>
<h1 th:inline="text">Hello <span sec:authentication="name">!</span></h1>
<h3>The Role is <span sec:authentication="principal.authorities"></span></h3>
<form th:action="@{/logout}" method="post">
    <input type="submit" value="Sign Out"/>
</form>
</body>
</html>